Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 8 (EMISSION CONTROL SYSTEM (2ZZ-GE))EMISSION CONTROL SYSTEMINSPECTION

2004 Toyota Matrix XR, FWD, Standard

Emission Control System: Inspection

2004 Toyota Matrix XR, FWD, StandardSECTION Inspection

WARNING: This page is about a different variant/trim than selected.

CHARCOAL CANISTER ASSY
1. Visually check the charcoal canister for cracks or damage.
  
  Fig 1: Checking Charcoal Canister For Cracks Or Damage
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Inspect the charcoal canister operation.
  1. Plug the vent port with the cap.
  2. While holding the purge port closed, blow air (1.76 kPa, 18 gf/cm² , 0.26 psi) into the EVAP port and check that air flows from the air drain port.
    
    Fig 2: Checking Air Flows From Air Drain Port While Holding Purge Port Closed
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. While holding the purge port and the air drain port closed, blow air (1.76 kPa, 18 gf/cm² , 0.26 psi) into the EVAP port and check that air does not flow from the air inlet port.
    
    Fig 3: Checking Air Does Not Flow From Air Inlet Port While Holding Purge Port & Air Drain Port Closed
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. Apply vacuum (3.43 kPa, 25.7 mmHg, 1.01 in.Hg) to the purge port, check that the vacuum dose not decrease when the air inlet port is closed, and check that the vacuum decreases when the air inlet port is released.
    
    Fig 4: Checking Vacuum Decreases When Air Inlet Port Is Released
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. While holding the air inlet port closed, apply vacuum (3.43 kPa, 25.7 mmHg, 1.01 in.Hg) to the EVAP port and check that air flows into the purge port.
    If operation is not as specified, replace the charcoal canister.
  6. Remove the hose and cap from vent port.
  Fig 5: Checking Air Flows Into Purge Port While Holding Air Inlet Port Closed
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Inspect VSV for Pressure Switching Valve
  1. Using an ohmmeter, check that there is continuity between the terminals.
    
    Fig 6: Checking Continuity Between Terminals Using An Ohmmeter
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Resistance: 37 - 44 Ω at 20°C (68°F)
    If there is no continuity, replace the VSV.
  2. Using an ohmmeter, check that there is no continuity between each terminal and the body.
    If there is continuity, replace the VSV.
    
    Fig 7: Checking No Continuity Between Each Terminal & Body Using An Ohmmeter
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. Check that air does not flow from ports E to F shown in Fig 8.
    
    Fig 8: Checking Air Does Not Flow From Ports E To F
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. Apply battery positive voltage across the terminals.
  5. Check that air flows from ports E to F shown in Fig 9.
    
    Fig 9: Checking Air Flows From Ports E To F While Applying Battery Positive Voltage Across Terminals
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    If operation is not as specified, replace the VSV.
VENTILATION VALVE SUB-ASSY
1. Install clean hose to the PCV valve.
2. Inspect the PCV valve operation.
  1. Blow air into the cylinder head side, and check that air passes through easily.
    CAUTION: Do not suck air through the valve. Petroleum substances inside the valve air harmful.